JP3336785B2 - Flexible bag filling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for filling a flexible bag contained in an outer box such as a corrugated cardboard with a liquid or an article having fluidity.

[0002]

2. Description of the Related Art Conventionally, when a flexible bag is automatically filled with a liquid or flowable article, as shown in FIG. 2, a flexible bag is placed on a fixed table 2 disposed below a filling device 1. The bag 3 is fed, the spout 4 of the flexible bag 3 is attached to the filling device 1 to perform filling, and after filling, the spout 4 is lowered and returned to the table 2, and is sent as one cycle of filling. The incoming flexible bags 3 are sequentially filled, and the filled flexible bags are sent from the table 2 to the next step, where they are dropped into an outer box.

When the flexible bag 3 is filled, it is necessary to prevent entry of various bacteria due to air entering the flexible bag, particularly when the filling is a product related to food or the like. Therefore, the airless fill device 5 is arranged on the table 2 side. The airless fill device 5 is provided with an opening 6 in a portion of the table 2 corresponding to the filling device 1, and supports the airless fill pad 7 sized to allow the opening 6 to pass therethrough and the airless fill pad 7. And an airless fill cylinder 8 which moves up and down. In the airless fill device 5, the airless fill pad 7 is provided so as to rise from the opening 6 by the expansion and contraction operation of the airless fill cylinder 8 and to drop from the raised position. The airless fill pad is applied from below to the spout side, and is applied from the end of filling to the closing of the spout to close the spout passage. Of course,
During filling, the spout passage is opened while waiting below.

FIG. 3 shows a filling cycle of a flexible bag using the airless filling device 5. As shown in the drawing, an opening 6 is provided at a position corresponding to the filling device 1 in the table 2, and an airless fill device 5 is provided so that the airless fill pad 7 is provided in the opening 6. Step (a) The flexible bag 3 is sent onto the table 2 by the bag moving holder 9 holding the spout 4, and the spout 4 is placed below the filling device 1 (and
(Also above the airless fill pad 7). Although not shown, a plug is attached to the spout 4 in advance, and a flat flexible bag is transported in a closed state. Step (b) Next, the bag moving holder 9 is raised and the spout 4 is mounted on the filling device 1, and the airless fill cylinder 8 is extended to move the airless fill pad 7 from below the flexible bag 3 to the spout 4 side. The passage from the spout 4 to the inside of the flexible bag 3 is closed (initial spout passage closing). In the filling device 1, a filling chamber (not shown) is provided around the filling nozzle 1a, sterilization is performed while holding the spout in the filling chamber, and removal of a plug from the spout (opening) is performed. The connection is made between the spout and the filling nozzle. Step (c) After the spout is mounted on the filling device and the spout and the filling nozzle are connected in the filling chamber, the airless fill pad 7 descends to the opening 6 (end of closing the initial spout passage). Then, filling is performed. As described above, the airless fill pad 7 is lowered (opens the spout passage) and stands by below. Step (d) After the filling is completed, the airless fill pad 7 rises again, and the spout 4
The passage from the spout 4 to the inside of the flexible bag 3 is closed (later spout passage closed). Then, after the spout is separated from the filling nozzle in the filling chamber, the stopper is fitted (closed). Step (e) After the plugging, the airless fill pad 7 is opened.
At the end (end of the late spout passage closure)
After the bag moving holder is lowered, the spout is released, whereby the filled flexible bag 3 is placed on the table 2 as a whole. And
After the step (e), as described above, the sheet is conveyed to the part dropped into the outer box.

[0005]

In filling the flexible bag, the table is fixed as described above and the distance from the table to the filling nozzle is fixed, and is substantially in the range of 200 mm to 250 mm. Is set to This distance corresponds to the filling of a flexible bag having a large capacity, and was set such that the shape of the flexible bag being filled was relatively stable. However, since the distance between the filling nozzle and the table is constant, when the filling capacity changes, that is, when filling is performed on a flexible bag having a small capacity in the same manner as described above, a flexible bag having a small capacity is obtained. Fig. 4 (b) showing the filling of
(C) As shown in (d), the filling is performed in a state where the flexible bag is largely lifted upward, and when the flexible bag is released on the table after the filling is completed, the shape of the flexible bag is changed. As a result, the flexible bag is greatly deformed (e), and the shape and the direction of the filled flexible bag are different from each other, and there is a disadvantage that the flexible bag becomes unstable. For this reason, FIG.
(C) As shown in FIG.
When the inclined flexible bag 3 (FIG. 5B) or the displaced flexible bag 3 (FIG. 5C) is dropped into the outer box 10 (FIG. 5A) prepared for There has been a problem that automatic storage becomes difficult and the outer box or the flexible bag may be damaged.

Further, the airless fill cylinder of the airless fill device expands and contracts to raise and lower the airless fill pad so that the airless fill pad is placed below the spout or positioned at the table opening. However, since the stroke L is long, the stroke L is long. The expansion and contraction operation time of the airless fill cylinder becomes longer,
Therefore, there is a problem that the time of one cycle of filling becomes long.

In view of the above circumstances, it is an object of the present invention to reduce the operating time of an airless fill cylinder while reducing the time required for an airless fill cylinder while ensuring that the shapes of the flexible bags released on the table after filling are made uniform. An object of the present invention is to properly drop a flexible bag and to improve the filling efficiency.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and a table for receiving a flexible bag is arranged below a filling device, and is provided corresponding to the filling device of the table. Equipped with an airless fill device that raises and lowers the airless fill pad with an extendable airless fill cylinder at the opening, and pulls up the closed spout of the unfilled flexible bag conveyed on the table by using the bag moving holder to fill it up. After the spout is opened, the contents are filled, and the spout is closed by the filling device, the sealed spout is lowered downward from the filling device by the bag moving holder to release the airless fill. The device flexibly removes the airless fill pad from when the spout is opened by the filler until the filling starts Apply the bag toward the spout from below to close the spout initial passage, lower the airless fill pad during filling to open the spout passage, and from the end of filling to the spout closure by the filling device, A filling method in which an airless fill pad is applied to a flexible bag in a spout direction from below to close a late passage of a spout, and the table and the airless fill device are filled from a bag transport height position above the bag. The table and the airless filling device are raised to the filling bag supporting height position when the bag moving holder holding the spout is raised to the filling device side so as to be movable up and down to the bag supporting height position. At the filling bag supporting height position, the airless filling device closes the spout initial passage and opens the spout passage. When the spout late passage is closed and the spout closed after the filling is completed and the bag moving holder is lowered, both the table and the airless fill device in which the airless fill pad has been lowered to the opening portion have a bag conveying height. The object of the present invention is to solve the above-mentioned problem by providing a method of filling a flexible bag, which is characterized by being lowered to a position.

[0009]

According to the present invention, since the table can be raised to the filling bag supporting height position, when filling a flexible bag having a small capacity, the table is filled with the table raised to the filling bag supporting height position. By doing so, the flexible bag having a small storage capacity can be filled without being pulled up significantly. And
At the filling bag supporting height position, the airless fill pad is raised and lowered from the opening to the lower part of the spout, and the stroke is small, and the operation time of the airless fill device is shortened.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described based on one embodiment shown in FIG. 2 to 5 are denoted by the same reference numerals, and the description thereof will be omitted. That is, in the present invention, in the state where the table 2 and the airless fill device 5 are integrated, the bag transport height position 1
1 to a filling bag supporting height position 12 above and below the filling device 1 so as to be able to move up and down, and the airless filling device 5 is provided at the filling bag supporting height position 12 The airless fill cylinder 8 expands and contracts, and the airless fill pad 7 is provided so as to move up and down from the opening 6 (at the filling bag supporting height) to the lower part of the spout (spout when mounted on the filling device). At this height, the initial spout passage is closed, the spout passage is opened, and the latter spout passage is closed.

The operation in which the table 2 and the airless filling device 5 which can be raised and lowered are operated to fill a flexible bag having a small capacity is described as follows. Step (A) The unfilled flexible bag 3 is fed into the table 2 at the bag transfer height position 11 by the bag moving holder 9 holding the closed spout 4, and the spout 4 is It is arranged so as to correspond to the lower side. Step (B) Next, when the bag moving holder 9 is lifted and the spout 4 moves toward the filling device 1, the table 2 and the airless filling device 5 are both moved to the filling bag supporting height position 12 with this. To rise. When the bag moving holder 9 is raised and the spout 3 is mounted on the filling device 1, before the spout opening on the filling device 1 side is started in the same manner as before, the filling bag supporting height position is set. 12, the initial spout passage is closed. That is, the airless fill cylinder 8 is extended and the airless fill pad 7 located at the opening 6 is applied from below the flexible bag 3 toward the spout side to close the internal passage of the spout 4.

Step (C) The spout 4 is mounted on the filling device 1, and the spout 4 and the filling nozzle 1a are set in the filling chamber.
Is established, the airless fill pad 7 descends and the initial spout passage closing is completed. The airless fill pad 7 only needs to open a spout passage so that the filling material can be properly fed into the flexible bag 3 through the spout 4. It is provided so as to descend to a pad standby height position 13 close to the bottom (of course, set between the connected spout and the filled bag support height position 12). When the airless fill pad 7 descends, the operation of opening the spout passage of the air refill device 5 is started. As described above, since the airless fill pad 7 once drops to the pad standby height position, the operation time of the airless fill cylinder 8 is reduced. Even when the airless fill pad 7 is lowered to the filling bag support height position 12 (opening), the amount of the lowering is smaller than in the conventional process.
Filling is performed after the airless fill device 5 starts the operation of opening the spout passage.

Step (D) After the filling is completed, the airless fill pad 7 rises again from the pad standby height position 13 to complete the opening of the spout passage, and the closing of the spout passage proceeds to the latter stage.
The operation of closing the spout passage in the latter stage is to apply the airless fill pad 7 from below the flexible bag 3 toward the spout 4 side to close the passage from the spout 4 to the inside of the flexible bag 3. Then, after the closing of the latter spout passage is started, the spout 4 is separated from the filling nozzle 1a in the filling chamber, and a plug is fitted (closed). Step (E) After the plugging, the airless fill pad 7 has the opening 6
(To end the closing of the late spout passage). And
The bag moving holder 9 descends to remove the spout from the filling device 1, and the table 2 and the airless fill device 5 descend to the bag conveying height position 11 as the bag moving holder 9 descends. After the bag moving holder 9 is lowered by a predetermined amount, the spout 4 is released,
As a result, the filled flexible bag 3 is placed on the table 2 as a whole. After the step (E), the sheet is conveyed to the portion dropped into the outer box in the same manner as in the related art.

[0014]

According to the present invention, the table and the airless fill device can be raised to the filling bag supporting height position with the raising of the bag moving holder. By arranging a small amount of flexible bag on the table and raising it to a high filling bag supporting height, filling can be performed without significantly raising the flexible bag. After the filling, the flexible bag returns to the high filling bag support height position, so the arrangement position of the filled flexible bag does not shift and the shape of the bag does not change significantly, so the filled bag The shape of each flexible bag becomes stable, and the flexible bag can be properly dropped into the outer box. In addition, since the airless fill pad is raised or lowered at the filling bag supporting height position close to the filling device, the stroke is shortened, the operation time of the airless filling device is shortened, and therefore, one cycle of filling is performed. The effect of the present invention is excellent in practicability, for example, the time is shortened.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a method for filling a flexible bag according to the present invention, wherein (A) is an explanatory view showing a state in which the flexible bag is carried in, and (B) is a state in which a spout is mounted on a filling device. (C) is an explanatory diagram showing a state during filling, (D) is an explanatory diagram showing a state after completion of filling, and (E) is an explanatory diagram showing a state in which the flexible bag is returned to the table. is there.

FIG. 2 is an explanatory view showing a table and an airless fill device in a conventional filling method.

FIG. 3 shows a conventional method of filling a flexible bag, (a) is an explanatory view showing a state in which the flexible bag is carried in, (b) is an explanatory view showing a state in which a spout is mounted on a filling device, C) is an explanatory view showing a state during filling;
(D) is an explanatory view showing a state after the filling is completed, and (E) is an explanatory view showing a state in which the flexible bag is returned to the table.

4 (a) and 4 (b) show a conventional method for filling a flexible bag having a small storage capacity, wherein FIG. 4 (a) is an explanatory view showing a state in which the flexible bag is carried in, and FIG. (C) is an explanatory diagram showing a state during filling, (D) is an explanatory diagram showing a state after completion of filling, and (E) is an explanatory diagram showing a state where the flexible bag is returned to the table. .

FIGS. 5A and 5B are views showing the dropping of a filled flexible bag, wherein FIG. 5A is an explanatory view showing a flexible bag in an appropriate state with respect to an outer box, and FIG. FIG. 3C is an explanatory view showing the bag, and FIG. 3C is an explanatory view showing the flexible bag shifted from the outer box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Filler 2 ... Table 3 ... Flexible bag 5 ... Airless fill device 6 ... Opening 7 ... Airless fill pad 9 ... Bag transfer holder 11 ... Bag transfer height position 12 ... Filled bag support height position 13 ... Pad standby Height position

Claims (1)

(57) [Claims] 1. An airless fill that has a table for receiving a flexible bag disposed below the filling device, and that raises and lowers an airless fill pad in an opening provided in the table corresponding to the filling device by an extendable airless fill cylinder. The apparatus comprises an unfilled flexible bag conveyed onto the table, and the closed spout is lifted upward by a bag moving holder and attached to a filling device. The spout is opened by the filling device, the contents are filled, and the spout is filled. After closing the spout, the closed spout is lowered from the filling device by the bag moving holder and released, and the airless filling device is used for the airless filling between the time the spout is opened by the filling device and the start of filling. Apply the pad to the flexible bag from below in the spout direction Close the initial passage, lower the airless fill pad during filling to open the spout passage, and apply the airless fill pad to the flexible bag from below toward the spout from the end of filling until the spout is closed by the filling device. A filling method for closing the late passage of the spout, whereby the table and the airless fill device are provided so as to be movable in a vertical direction from a bag conveying height position to a filling bag supporting height position thereabove. When the bag moving holder holding the spout rises to the filling device side, the table and the airless filling device are raised to a filling bag supporting height position, and at the filling bag supporting height position, the airless filling device moves the spout. The initial passage was closed, the spout passage was opened, and the late spout passage was closed. Filling the flexible bag with the table and the airless fill device having the airless fill pad lowered at the opening when the holder for moving the bag is lowered. Method.